N

M

a

M

M

C


M

U

U

L

arbutin

<

<

alpha arbutin powder (1)

V

V
A
B
C
8
4
M
P
P
C
U
S
U
M
M
A
α
β
K
2
1
M
+
-

M

1

2

3


  • I
  • I

  • U
    N
    M

     

     

    M

    U

  • B